LSA 44 - Leroy- · PDF file2017.11 / f 2 Electric Power Generation Installation and...

LSA 44.3

Low Voltage Alternators - 4 poleInstallation and maintenance

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Electric Power Generation Installation and maintenance

LSA 44.3Low Voltage Alternators - 4 pole

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This manual concerns the alternator which you have just purchased.We wish to draw your attention to the contents of this maintenance manual.

SAFETY MEASURESBefore using your machine for the first time, it is important to read the whole of this installation and maintenance manual.All necessary operations and interventions on this machine must be performed by a qualified technician.Our technical support service will be pleased to provide any additional information you may require.The various operations described in this manual are accompanied by recom-mendations or symbols to alert the user to potential risks of accidents. It is vital that you understand and take notice of the following warning symbols.

Warning symbol for an operation capable of damaging or destroying the machine or surrounding equipment.

Warning symbol for general danger to personnel.

Warning symbol for electrical danger to personnel.

SAFETY INSTRUCTIONSWe wish to draw your attention to the following 2 safety measures which must be complied with:

a) During operation, do not allow anyone to stand in front of the air outlet guards, in case anything is ejected from them.b) Do not allow children younger than 14 to go near the air outlet guards.A set of self-adhesive stickers depicting the various warning symbols is included with this maintenance manual. They should be positioned as shown in the drawing below once the machine has been fully installed.

WARNINGThe alternators must not be put into service until the machines in which they are to be incorporated have been declared compliant with Directives EC and plus any other directives that may be applicable.This manual is to be given to the end user.The range of electric alternators and their derivatives, manufactured by us or on our behalf, comply with the technical requirements of the customs Union directives (EAC).

© - We reserve the right to modify the characteristics of this product at any time in order to incorporate the latest technological developments. The information contained in this document may therefore be changed without notice.

This document may not be reproduced in any form without prior authorisation.All brands and models have been registered and patents applied for.

WARNING

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CONTENTS1 - RECEIPT ............................................................................................................................4

1.1 - Standards and safety measures ............................................................................... 41.2 - Inspection ................................................................................................................. 41.3 - Identification ............................................................................................................. 41.4 - Storage ..................................................................................................................... 41.5 - Applications .............................................................................................................. 41.6 - Usage restrictions ..................................................................................................... 4

2 - TECHNICAL CHARACTERISTICS ...................................................................................52.1 - Electrical characteristics ........................................................................................... 52.2 - Mechanical characteristics ....................................................................................... 5

3 - INSTALLATION .................................................................................................................63.1 - Assembly .................................................................................................................. 63.2 - Checks prior to first use ............................................................................................ 63.3 - Terminal connection diagrams .................................................................................. 73.4 - Commissioning ....................................................................................................... 103.5 - Setting up ............................................................................................................... 10

4 - SERVICING - MAINTENANCE ........................................................................................ 114.1 - Safety measures ......................................................................................................114.2 - Routine maintenance ...............................................................................................114.3 - Bearings ................................................................................................................. 124.4 - Mechanical defects ................................................................................................. 124.5 - Electrical faults ....................................................................................................... 134.6 - Dismantling, reassembly ........................................................................................ 154.7 - Installation & maintenance of the PMG .................................................................. 174.8 - Table of characteristics ...................................................................................... 17-18

5 - SPARE PARTS ................................................................................................................195.1 - First maintenance parts .......................................................................................... 195.2 - Technical support service ....................................................................................... 195.3 - Accessories ........................................................................................................... 195.4 - Exploded views, parts list and tightening torque .................................................... 20

Disposal and recycling instructions

Declaration of EC compliance and incorporation

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Electric Power Generation

LSA

000

-1-0

06 e

Moteurs Leroy-Somer - Boulevard Marcellin Leroy,CS 10015 - 16915 Angoulême Cedex 9 - France

IEC 60034 - 1 & 5. / ISO 8528 - 3. / NEMA MG1 - 32 & 33.

R

C US Made in ............................166631

IP LSAN°:

Th.class. A.V.R. Excit.

Excit. values full load : V / A at no load : A

D.E. bearing N.D.E. bearing

Altitude : m

kVAkWA

V

kVAkWA

Weight : kg r.p.m.P.F. :

Hz

RATINGSVoltage

Phase

Conn.

Contin.

P.R.

B.R.

40°C.

Std by

27°C.

Date :

Installation and maintenance


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1 - RECEIPT1.1 - Standards and safety measures Our alternators comply with most international standards.See the EC Declaration of Incorporation on the last page.

1.2 - Inspection On receipt of your alternator, check that it has not suffered any damage in transit. If there are obvious signs of knocks, contact the transporter (you may be able to claim on their insurance) and after a visual check, turn the machine by hand to detect any malfunction.

1.3 - Identification The alternator is identified by means of a nameplate fixed on the machine (see drawing).Make sure that the nameplate on the machine conforms to your order.So that you can identify your alternator quickly and accurately, we suggest you fill in its specifications on the nameplate below.

1.4 - Storage Prior to commissioning, machines should be stored :- away from humidity (< 90%); after a long period of storage, check the machine insulation. To prevent the bearings from becoming marked, do not store in an environment with significant vibration.

1.5 - Application These alternators are mainly designed to produce electricity in the context of applications involving the use of generators.

1.6 - Usage restrictions Use of the machine is restricted to operating conditions (environment, speed, voltage, power, etc) compatible with the characteri-stics indicated on the nameplate.

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2 - TECHNICAL CHARACTERISTICS2.1 - Electrical characteristics This alternator is a machine without sliprings or revolving armature brushes, wound as “2/3 pitch”, 12-wire, with class H insulation and a field excitation system available in either SHUNT, AREP or «PMG» version (see diagrams and AVR manuals).• Electrical options - Stator temperature detection sensors- Space heaterIn order to conform to standard EN 61000-6-3, EN 61000-6-2, EN 55011, the R 791 interference suppression kit is needed.

2.2 - Mechanical characteristics - Steel frame- Cast iron end shields- Protected ball bearings, greased for life- Mounting arrangements: foot and flange mounted, single-bearing with SAE coupling disc, double-bearing with SAE flange and standard cylindrical shaft extension- Drip-proof machine, self-cooled- Degree of protection: IP 23

• Mechanical options - Air inlet filter- IP 44 protection

T1 T2 T3

T4 T5 T6

Varis

tor

5+ 6-

T7 T8 T9

T10 T11 T12

R 250

SHUNT SYSTEM

AREP SYSTEM

PMG SYSTEM

STATOR : 12-wire (marking T1 to T 12)

EXCITER

Field

Armature

EXCITER

Field

Armature

EXCITER

Field

Armature

MAIN FIELD

Power supply / Detection

T1 T2 T3

T4 T5 T6

Varis

tor

5+ 6-

T7 T8 T9

T10 T11 T12

R 438

Aux. windingsSTATOR : 12-wire (marking T1 to T 12) MAIN FIELD

Voltage reference

T1 T2 T3

T4 T5 T6

Varis

tor

5+ 6-

T7 T8 T9

T10 T11 T12

R 438

PMG

STATOR : 12-wire (marking T1 to T12) MAIN FIELD

Voltage reference

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3.2 - Checks prior to first use• Electrical checks

Under no circumstances should an alternator, new or otherwise, be operated if the insulation is less than 1 megohm for the stator and 100,000 ohms for the other windings.

3 - INSTALLATIONPersonnel undertaking the various operations indicated in this section must wear personal protective equipment appropriate for mechanical and electrical hazards.

3.1 - Assembly

All mechanical handling operations must be undertaken using suitable equipment and the machine must be horizontal. Check how much the machine weighs before choosing the lifting tool.During this operation, do not allow anyone to stand under the load.

• HandlingThe generously-sized lifting eyes are for handling the alternator only. They must not be used to lift the genset. The choice of lifting hooks or handles should be determined by the shape of the lifting eyes. Choose a lifting system which respects the integrity and the environment of the machine.

During this operation, do not allow anyone to stand under the load.

• Single-bearing couplingBefore coupling, check the compatibility between the alternator and the engine by performing:- undertaking a torsional analysis of the transmission (alternators data are available on request),- checking the dimensions of the flywheel and its housing, the flange, coupling discs and offset.

WARNING

When coupling the alternator to the prime mover, do not use the fan to turn the alternator or rotor.The holes of the coupling discs should be aligned with the flywheel holes by cranking the engine.Make sure the machine is securely bedded in position during coupling.Check that there is lateral play on the crankshaft.• Double-bearing coupling- Semi-flexible couplingCareful alignment of the machines is recommended, checking that the lack of concentricity and parallelism of both parts of the coupling do not exceed 0.1 mm.This alternator has been balanced with a 1/2 key.• LocationThe room where the alternator is placed must be ventilated to ensure that the ambient temperature cannot exceed the data on the nameplate.

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L1(U)

N

L3(W)

T1 T7

T12T10T4

T9

T3

T6T11

T5

T2

T8 L2(V)

A 60 Hz50 Hz

190 - 208 190 - 240

220 - 230 -

- 190 - 208

6

7

8

N

T1

T7

T12T10

T4

T9

T3 T6

T11 T5

T2T8

L1(U)

L3(W) L2(V)

D 60 Hz50 Hz

380 - 415 380 - 480

440 - 460 -

- 380 - 416

6

7

8

Connection codes L.L. voltage

R 250 voltage sensing: 0 => (T8) / 110 V => (T11)R 438 voltage sensing: 0 => (T3) / 110 V => (T2)


Winding

Winding

3 phases

3 phases

Factory connection

NDE

NDE

N

L1(U)

L2(V)

L3(W)T9

T8

T7

T12

T10

T11

T4

T3

T2

T1

T5T6

T12

T10

T11

N

L1(U)

L2(V)

L3(W)T9

T8

T7

T4

T3

T2

T1

T5

T6

There are 2 possible methods for restoring the above minimum values.a) Dry out the machine for 24 hours in a drying oven at a temperature of 110 °C (without the regulator).b) Blow hot air into the air intake, having made sure that the machine is rotating with the exciter field disconnected.Note : Prolonged standstillIn order to avoid these problems, we recommend the use of space heaters, as well as turning over the machine from time to time. Space heaters are only really effective if they are working continuously while the machine is stopped.

Ensure that the alternator has the degree of protection matching the defined environmental conditions.

• Mechanical checksBefore starting the machine for the first time, check that:- all fixing bolts are tight,- the length of bolt and the tightening torque are correct,

WARNING

- the cooling air is drawn in freely,- the protective grills and housing are cor-rectly in place,- the standard direction of rotation is clock-wise as seen from the drive end (phase rotation in order 1 - 2 - 3).For anti-clockwise rotation, swap 2 and 3.- the winding connection corresponds to the site operating voltage (see section 3.3).

3.3 - Terminal connection diagramsTo modify the connection, change the position of the stator cables on the terminals. The winding code is specified on the nameplate.

Any intervention on the alternator terminals during reconnection or checks should be performed with the machine stopped.In no case should the internal connections in the terminal box be subjected to stresses due to cables connected by the user.

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F L1(U)

M

L3(W)

T1

T7

T12

T10

T4T9

T3

T6

T11 T5 T2T8L2(V)

FF 60 Hz50 Hz

220 - 240 220 - 240

220 - 240200

250 - 260 -

6

7

8

60 Hz50 Hz

220 - 240 220 - 240

220 - 240200

250 - 260 -

6

7

8

L

L L

T1 T7

T12

T10T4

T9T3

T6

T11T5

T2 T8

LM

MT1T7T12

T10

T4

T9

T3

T6

T11

T5T2

T8LL

G 60 Hz50 Hz

220 - 240 220 - 240

250 - 260

200

-

220 - 240

6

7

8

Connection codes L.L. voltage Factory connection

LM voltage = 1/2 LL voltage




1 phase

1 phaseor

3 phases

Winding

Winding

NDE

NDE



Winding

1 phase

NDE

L1(U)

L2(V)

L3(W)

M

L

L

L

L

T9

T8

T7

T12

T10

T11T4

T3

T2

T1

T5

T6

T9

T8

T7 T12

T10

T11

T4

T3

T2

T1

T5

T6

M

L

LT9

T8

T7T12

T10

T11

T4

T3

T2

T1

T5

T6

When coupling alternators in parallel with connected neutral,it may be necessary to use a reactance (please contact us).

Tightening torque of terminal (M10 / 20 Nm +/-3).

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T1 T4T3T2

L LM

L - L220230240

110115120

T2 - T3 T2 - T3T1 T4

L - M L L MSERIAL CONNECTION

SINGLE-PHASE 4-WIRE - type M or M1 DEDICATED WINDING

R 250 voltage sensing: 0 => (T1) / 110 V => (T2)

Voltage 50/60HzLink

Output

Warning: parallel connection not possible.

• Option connection diagram

A D F B F/F G

T1 T1 T1 T1 T1 T2 T2 T2 T2 T2 T9 T3 T3 T3 T3 T3 NC NC N N

ST4

Ph1

Ph2

Ph3

101

102

103

104

130°CBlue wire

150°CBlack wire

180°CRed/white wire

R 791 T interference suppression kit (standard for CE marking) Voltage potentiometer

Voltage adjustmentby remote potentiometer

BlackBlackBlack

Blue

Green/Yellow

Anti condensation heater Thermistor (PTC) temperature

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• Connection checks

Electrical installations must comply with the current legislation in force in the country of use.Check that:- The residual circuit-breaker conforms to legislation on protection of personnel, in force in the country of use, and has been correctly installed on the alternator power output as close as possible to the alternator. (In this case, disconnect the wire of the interference suppression module linking theneutral).- Any protection devices in place have not been tripped.- If there is an external AVR, the connections between the alternator and the cabinet are made in accordance with the connection diagram.- There is no short-circuit phase-phase or phase-neutral between the alternator output terminals and the generator set control cabinet (part of the circuit not protected by circuitbreakers or relays in the cabinet).- The machine should be connected with the busbar separating the terminals as shown in the terminal connection diagram.

- The alternator earth terminal inside the terminal box is connected to the electrical earth circuit- The earth terminal is connected to the frame.The connections inside the terminal box must never be subjected to stress due to cables connected by the user.

3.4 - Commissioning

The machine can only be started up and used if the installation is in accordance with the regulations and instructions defined in this manual.The machine is tested and set up at the factory. When first used with no load, make sure that the drive speed is correct and stable (see the nameplate). With the regreasable bearing option, we recommend greasing the bearings at the time of commissioning (see section 4.3).On application of the load, the machine should achieve its rated speed and voltage; however, in the event of abnormal operation, the machine setting can be altered (follow the adjustment procedure in section 3.5). If the machine still operates incorrectly, the cause of the malfunction must be located (see section 4.5).

3.5 - Setting up

The various adjustments during tests must be made by a qualified engineer.Ensure that the drive speed specified on the nameplate is reached before commencing adjustment.After operational testing, replace all access panels or covers.The AVR is used to make any adjustments to the machine.

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4 - SERVICING - MAINTENANCE4.1 - Safety measuresServicing or troubleshooting must be carried out strictly in accordance with instructions so as to avoid the risk of accidents and to maintain the machine in its original state.

All such operations performed on the alternator should be undertaken by personnel trained in the commissioning, servicing and maintenance of electrical and mechanical components, who mustwear personal protective equipment appropriate for mechanical and electrical hazards.Before any intervention on the machine, ensure that it cannot be started by a manual or automatic system and that you have understood the operating principles of the system.

Warning : During and after running, the alternator will reach temperatures hot enough to cause injury, such as burns.

4.2 - Routine maintenance• Checks after start-upAfter approximately 20 hours of operation, check that all fixing bolts on the machine are still tight, plus the general state of the machine and the various electrical connections in the installation.

• Electrical servicingCommercially-available volatile degreasing agents can be used.

Do not use: trichlorethylene, perchlo-rethylene, trichloroethane or any alkaline products.

These operations must be performed at a cleaning station, equipped with a vacuum system that collects and flushes out the products used.The insulating components and the impregnation system are not at risk of damage from solvents. Avoid letting the cleaning product run into the slots.Apply the product with a brush, sponging frequently to avoid accumulation in the housing. Dry the winding with a dry cloth. Let any traces evaporate before reassembling the machine.

• Mechanical servicing

Cleaning the machine using water or a highpressure washer is strictly prohi-bited. Any problems arising from such treatment are not covered by our warranty.Degreasing: Use a brush and detergent (suitable for paintwork).Dusting: Use an air gun.If the machine is fitted with air inlet and outlet filters, the maintenance personnel should clean them routinely at regular intervals. In the case of dry dust, the filter can be cleaned using compressed air and/or replaced if it is clogged.After cleaning the alternator, it is essential to check the winding insulation (see sections 3.2 and 4.5).

WARNING

WARNING

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4.4 - Mechanical defects

Fault Action

BearingExcessive overheating of one or both bearings(bearing temperature 80°C above the ambient temperature)

- If the bearing has turned blue or if the grease has turned black, change the bearing.

- Bearing not fully locked (abnormal play in the bearing cage) - End shields incorrectly aligned

Abnormal temperature

Excessive overheating of alternator frame (more than 40° C above the ambient temperature)

- Air flow (inlet-outlet) partially clogged or hot air is being recycled from the alternator or engine

- Alternator operating at too high a voltage (>105% of Un on load)

- Alternator overloaded

VibrationsToo much vibration

- Misalignment (coupling)- Defective mounting or play in coupling- Rotor balancing fault (Engine - Alternator)

Excessive vibration and humming noise coming from the machine

- Phase imbalance - Stator short-circuit

Abnormal noise

Alternator damaged by a significant impact, followed by humming and vibration

- System short-circuit- MisparallelingPossible consequences - Broken or damaged coupling- Broken or bent shaft end- Shifting and short-circuit of main field- Fan fractured or coming loose on shaft- Irreparable damage to rotating diodes/AVR, surge suppressor

4.3 - BearingsThe bearings are permanently greased Approximate life of the grease (depending on use) = 20,000

hours or 3 years.

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4.5 - Electrical faultsFault Action Effect Check/Cause

No voltageat no load on start-up

Connect a new battery of 4 to 12 volts to terminals E- and E+, respecting the polarity, for 2 to 3 seconds

The alternator builds up and its voltage is still correct when the battery is removed

- Lack of residual magnetism

The alternator builds up but its voltage does not reach the rated value when the battery is removed

- Check the connection of the voltage reference to the AVR

- Faulty diodes- Armature short-circuit

The alternator builds up but its voltage disappears when the battery is removed

- Faulty AVR- Field windings open circuit (check winding)- Revolving field coil open circuit (check the

resistance)

Voltage too low

Check the drive speed

Correct speed

Check the AVR connections (AVR may be faulty)- Field windings short-circuited- Rotating diodes burnt out- Revolving field coil short-circuited- Check the resistance

Speed too lowIncrease the drive speed (do not touch the AVR voltage pot. (P2) before running at the correct speed)

Voltage too high

Adjust AVR voltagepotentiometer

Adjustment ineffective Faulty AVR

Voltageoscillations

Adjust theAVR stabilitypotentiometer

If no effect: try normal or fast stabilitymodes (ST2)

- Check the speed: possibility of cyclic irregularity

- Loose connections- Faulty AVR- Speed too low when on load (or AVR LAM set

too high)

Voltage correct at no load and too low when onload

Run at no load and check the voltage between E+ and E- on the AVR

Voltage between E+ and E- (DC)SHUNT < 20V - AREP / PMG < 10V

- Check the speed (or AVR LAM set too high)

Voltage between E+ and E-SHUNT > 30V - AREP / PMG > 15V

- Faulty rotating diodes- Short-circuit in the revolving field coil. Check

the resistance.- Faulty exciter armature. Check the resistance

Voltagedisappearsduring operation

Check the AVR, thesurge suppressor,the rotating diodes, andreplace any defectivecomponents

The voltage does not return to the rated value

- Exciter winding open circuit- Faulty exciter armature- Faulty AVR- Revolving field coil open circuit or short-circuited

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• Checking the windingYou can check the winding insulation by performing a high voltage test. In this case, you must disconnect all AVR wires.

WARNINGDamage caused to the AVR in such conditions is not covered by our warranty.

• Checking the windings and rotating diodes using separate excitation

During this procedure, make sure that the alternator is disconnected from any external load and inspect the terminal box to check that the connections are fully tightened.1) Stop the unit, disconnect and isolate the AVR wires.2) There are two ways of creating an assembly with separate excitation.

Assembly A: Connect a 12 V battery in series with a rheostat of approximately 50 ohms - 300 W and a diode on both exciterfield wires (5+) and (6-).

6 - 5 +

1A diode

12V battery

Rh. 50 -300W

-+

ASSEMBLY AField

Assembly B: Connect a “Variac” variable power supply and a diode bridge on both exciter field wires (5+) and (6-).Both these systems should have characteristics which are compatible with the field excitation power of the machine (see the nameplate).3) Run the unit at its rated speed.4) Gradually increase the exciter field current by adjusting the rheostat or the variac and measure the output voltages on L1 - L2 - L3, checking the excitation voltage and current at no load (see the machine nameplate or ask for the factory test report).When the output voltage is at its rated value and balanced within 1% for the rated excitation level, the machine is in good working order. The fault therefore comes from the AVR or its associated wiring (ie. sensing, auxiliary windings).

1A diode

-

+

6 - 5 +

Variac AC220V

DC12V

50 60

7080

90

100

40

3020

10

0

ASSEMBLY B Field

4.5.2 - Checking the diode bridgeA diode in good working order should allow the current to flow only in the anode-to-cathode direction.

A n o d e C a t h o d e+ -

-

CA

+-

CA

+

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4.6 - Dismantling, reassembly

During the warranty period, this operation should only be carried out in an approved workshop or in our factory, otherwise the warranty may be invalidated.Whilst being handled, the machine should remain horizontal (rotor not locked when moved). Check how much the machine weighs before choosing the lifting method.

• Tools requiredTo fully dismantle the machine, we recommend using the tools listed below:- 1 ratchet spanner + extension- 1 torque wrench- 1 set of flat spanners: 7, 8, 10, 12 mm- 1 socket set: 8, 10, 13, 16, 18, 21, 22, 24 mm - 1 Allen key: size 5 (eg. Facom: ET5), size 6 (ET6), size 10 (ET10, size 14 (ET14)- 1 T20 and T30 TORX bit- 1 puller (U35)/(U32/350)

• Screw tightening torqueSee section 5.4.

• Access to diodes- Remove the air intake grille [51].- Check all 3 modules using an ohmmeter or a battery lamp.

- Refit the modules.- Refit the air intake grille [51].

• Access to connections and the regulation systemThe terminals are accessed directly by removing the terminal box lid [48]. To access the AVR adjustment potentiometers, the side plate [59] should be removed.

• Replacing the NDE bearing on single-bearing machines- Dismantling- Remove the terminal box lid [48].- Unscrew the fixing clamps on the power output cables, remove the connector from the exciter and the R 791 module.- Remove the 4 nuts on the tie rods.- Remove the NDE shield [36] using a puller: eg. U.32 - 350 (FACOM).- Remove the antifriction bearing [70] using a screw puller.

- Reassembly- Heat the inner slipring of a new bearing by induction or in a drying oven at 80°C (do not use an oil-bath) and fit it to the machine.- Place the preloading wavy washer [79] in the shield and fit a new O ring seal [349].Refit the NDE shield and pass the bundle of wires between the top bars of the shield.- Refit the fixing clamps on the cables, the R 791 module and the exciter connector.- Replace the terminal box lid [48] and also the earth continuity screw [29].

WARNING

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RotorNDE shield

Screw rod

When dismantling the shields, you will need to change the antifriction bearings, the “O” ring seal, the preloading (wavy) washer and adhesive paste.

• Replacing the DE bearing - Dismantling- Uncouple the alternator from the prime mover.- Remove the 8 assembly screws.- Remove the DE shield [32].- Remove the NDE shield.- Remove both antifriction bearings [60] and [70] using a puller with a central screw.- Reassembly- Heat the new bearings by induction or in a drying oven at 80°C (do not use an oil-bath) and fit them to the machine.- Check that both the preloading wavy washer [79] and the new O ring seal [349] have been fitted on the NDE shield [36].Refit the NDE shield and pass the bundle of wires between the top bars of the shield.- Refit the DE shield [32] and tighten the 8 fixing screws.- Check that the alternator assembly is correctly mounted and that all screws are tightened.

• Accessing the main field and stator- DismantlingFollow the procedure for dismantling the bearings.- Remove the coupling disc (single-bearing alternator) or the DE shield (twin-bearing alternator) and insert a tube of the corresponding diameter on the shaft end.- Rest the rotor on one of its poles, then slide it out. Use the tube as a lever arm to assist dismantling.- After extraction of the rotor, be careful not to damage the fan or dismantle it.- Remove the revolving field coil (rotor) and place on special V-shaped supports.

NOTE: If intervention is required on the revolving field coil (rewinding, replacement of components), the rotor assembly must be rebalanced.

- Reassembling the revolving field coil- Follow the dismantling procedure in reverse order.Take care not to knock the windings when refitting the rotor in the stator.- Refit the fan with its fixing screws on the hub.Follow the procedure for refitting the bearings.

WARNING

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4.7 - Installation and maintenance of the PMGThe PMG reference is PMG 7. See the PMG maintenance manual, ref: 4211.

After operational testing, it is essential to replace all access panels or covers. Don’t forget the screw [29] earth continuity.

4.8 - Table of characteristicsTable of average values: Alternator - 2 and 4 poles - 50 Hz/60 Hz - Winding n° 6 and M or M1 connected in dedicated single-phase. (400 V for the excitation values).The voltage and current values are given for no-load operation and operation at rated load with separate field excitation. All values are given at ± 10% (for exact values, consult the test report) and are subject to change without prior warning. For 60 Hz machines, the resistance values are the same and the excitation current «i exc» is approximately 5 to 10% weaker.

• SHUNT resistances at 20°C (Ω)

Type L/N stator Rotor Exciter field Armature

S2 0.0503 2.354 11.647 0.422S3 0.0503 2.354 11.647 0.422S4 0.039 2.578 12.941 0.459S5 0.039 2.578 12.941 0.459M6 0.0335 2.805 12.941 0.459M8 0.0287 3.032 12.941 0.459L10 0.0236 3.291 12.941 0.459

• SHUNT excitation current - 400 V - 50 Hz “i exc”: excitation current of the exciter field

Type At no load On loadS2 0.74 2.03S3 0.74 2.27S4 0.71 2.06S5 0.71 2.24M6 0.65 2.39M8 0.62 2.30L10 0.66 2.36

• AREP resistances at 20°C (Ω)


S2 0.0503 2.354 7.262 0.422S3 0.0503 2.354 7.262 0.422S4 0.039 2.578 8.068 0.459S5 0.039 2.578 8.068 0.459M6 0.0335 2.805 8.068 0.459M8 0.0287 3.032 8.068 0.459L10 0.0236 3.291 8.068 0.459

• AREP resistances at 20°C (Ω) on the auxiliary windings

Type Winding X1, X2 Winding Z1, Z2S2 0.341 0.627S3 0.341 0.627S4 0.304 0.571S5 0.304 0.571M6 0.288 0.575M8 0.271 0.559L10 0.247 0.524

• AREP excitation current - 400 V - 50 Hz “i exc”: excitation current of the exciter field.

Type At no load On loadS2 0.96 2.61S3 0.96 2.92S4 0.92 2.65S5 0.92 2.89M6 0.83 3.08M8 0.8 2.97L10 0.85 3.05

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• Voltage on the auxiliary windings

Type Winding X1, X2 Winding Z1, Z250 Hz 55 ... 59 11 ... 1660 Hz 66 ... 71 14 ... 19

• 4P dedicated single-phase - Winding M SHUNT excitation (50 Hz)Resistances at 20°C (Ω)


S2 0.012 2.354 11.647 0.422S3 0.012 2.354 11.647 0.422S4 0.0093 2.578 12.941 0.459S5 0.0093 2.578 12.941 0.459M8 0.0068 3.032 12.941 0.459

i exc excitation current (A) - 240 V - 60 Hz “i exc”: excitation current of the exciter field.

Type At no load On loadS2 0.7 1.3S3 0.7 1.5S4 0.7 1.3S5 0.7 1.5M8 0.6 1.3

• 4P dedicated single-phase - Winding M1 SHUNT excitation (60 Hz)Resistances at 20°C (Ω)


S2 0.0084 2.354 11.647 0.422S3 0.0084 2.354 11.647 0.422S4 0.0059 2.578 12.941 0.459S5 0.0059 2.578 12.941 0.459M6 0.0053 2.805 12.941 0.459L10 0.0042 3.291 12.941 0.459

i exc excitation current (A) - 240 V - 60 Hz “i exc”: excitation current of the exciter field.

Type At no load On loadS2 0.8 1.7S3 0.9 1.8S4 1 1.9S5 1 2M6 0.6 1.7L10 0.7 1.5

• Table of weights(values given for information only)

Type Total weight (kg) Rotor (kg)S2 301 120S3 301 120S4 338 136S5 338 136M6 374 150M8 404 162L10 439 178

After operational testing, it is essential to replace all access panels or covers. Don’t forget the screw [29] earth continuity.

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5 - SPARE PARTS5.1 - First maintenance partsEmergency repair kits are available as an option.They contain the following items:

SHUNT repair kit ALT 44.3 KS 001R250 voltage regulator -Diode set assembly -

-AREP repair kit ALT 44.3 KS 002R438 voltage regulator -Diode set assembly -

-Single-bearing kit ALT 44.3 KB 001NDE bearing -‘O' ring seal -Preloading wavy washer -

Twin bearing kit ALT 44.3 KB 002NDE bearing -DE bearing -‘O' ring seal -Preloading wavy washer -

5.3 - Accessories • Space heater for use when stoppedThe space heater must run as soon as the alternator stops. It is installed at the rear of the machine. Its standard power is 250W with 220V or 250W with 110V on request.

Warning: the power supply is present when the machine has stopped.

• Temperature sensors with thermistors (PTC)These are thermistor triplets with a positive temperature coefficient installed in the stator winding (1 per phase). There can be a maximum of 2 triplets in the winding (at 2 levels: warning and trip) and 1 or 2 thermistors in the shields.These sensors must be linked to adapted sensing relays (supplied optionally).Cold resistance of cold thermistor sensors:100 to 250 Ω per sensor.

5.2 - Technical support serviceOur technical support service will be pleased to provide any additional information you may require.

For all spare parts orders or technical support requests, send your request to [email protected] or your closest contact, whom you will find at www.lrsm.co/support indicating the comp-lete type of machine, its number and the information indicated on the nameplate.

Part numbers should be identified from the exploded views and their description from the parts list.

To ensure that our products operate correctly and safely, we recommend the use of original manufacturer spare parts.In the event of failure to comply with this advice, the manufacturer cannot be held responsible for any damage.

After operational testing, it is essential to replace all access panels or covers.

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5.4 - Exploded view, parts list and tightening torque• Single-bearing

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• Double-bearing

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Ref. Qty Description ScrewØ

TorqueN.m Ref. Qty Description Screw

ØTorque

N.m

1 1 Stator assembly - - 62 2 Fixing screw M6 8.3

4 1 Rotor assembly - - 67 1 Circlip - -

15 1 Fan - - 68 1 Inner bearing retainer - -

16 6 Fixing screw M6 5 70 1 NDE bearing - -

22 1 Key - - 79 1 Washer preloading - -

28 1 Earth terminal M6 10 90 1 Exciter field - -

29 1 Earth continuity screw M6 10 91 4 Fixing screws exciter M6 10

30 1 DE shield - - 100 1 Exciter armature - -

31 8 Fixing screw M12 69 107 1 Diode module support M5 6

32 1 S.A.E. washer - - 124 1 Terminal plate M6 5

33 2 Air outlet grille M6 5 198 1 Voltage regulator (AVR) M5 3.6

36 1 NDE shield - - 199 1 Interference suppression module - -

37 4 Tie rod M14 90 320 1 Sleeve - -

41 2 NDE or DE cover - - 322 2 Coupling disc - -

48 1 Top cover - - 323 8 Fixing screw M16 320

49 - Fixing screw M5 5 325 - Spacer shim - -

51 2 Air intake grille M5 3.6 343 3 Diode module assembly M5 3

59 2 Side cover - - 347 1 Surge suppressor M6 4

60 1 DE bearing - - 349 1 ‘O' ring seal - -

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Disposal and recycling instructionsWe are committed to limiting the environmental impact of our activity. We continuously monitor our production processes, material sourcing and product design to improve recyclability and minimise our environmental footprint.

These instructions are for information purposes only. It is the user’s responsibility to comply with local legislation regarding product disposal and recycling.

Recyclable materials Our alternators are mainly constructed from iron, steel and copper materials, which can be reclaimed for recycling purposes.

These materials can be reclaimed through a combination of manual dismantling, mechanical separation and melting processes. Our technical support depart-ment can provide detailed directions on how to dismantle products on request.

Waste & hazardous materials The following components and materials require special treatment and must be separated from the alternator before the recycling process:- electronic materials found in the terminal box, including the automatic voltage regulator (198), current transformers (176), interference suppression module (199) and other semi-conductors.- diode bridge (343) and surge suppressor (347), found on the alternator rotor.- major plastic components, such as the terminal box structure on some products. These components are usually marked with information concerning the type of plastic.

All materials listed above need special treatment to separate waste from reclaimable materials and should be entrusted to specialist recycling companies.

The oil and grease from the lubrication system should be treated as hazardous waste and must be treated in accordance with local legislation.

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Moteurs Leroy-Somer Siege social : Boulevard Marcellin Leroy CS 10015 - 16915 Angoulême cedex 9 - France SAS au capital de 65 800 512 € - RCS Angoulême 338 567 258

Declaration of EC compliance and incorporation This Declaration applies to the generators designed to be incorporated into machines complying with the Machinery Directive Nr 2006/42/EC dated 17 May 2006.

MOTEURS LEROY-SOMER MLS HOLICE STLO.SRO MOTEURS LEROY-SOMER DIVISION LEROY-SOMER Boulevard Marcellin Leroy SLADKOVSKEHO 43 1, rue de la Burelle STREET EMERSON 16015 ANGOULEME 772 04 OLOMOUC Boite Postale 1517 Nr4 Parcul Industrial Tetarom 2 FRANCE CZECH REPUBLIC 45800 ST JEAN DE BRAYE 4000641 CLUJ NAPOCA FRANCE ROMANIA

Declares hereby that the electric generators of the types: LSA40, LSA42.3, LSA44.2, LSA44.3, LSA46.2, LSA46.3, LSA47.2, LSA49.1, LSA49.3, LSA50.1, LSA50.2, LSA51.2, LSA52.2, LSA52.3, LSA53.1, LSA53, LSA53.2, LSA54, LSA54.2, TAL040, TAL042, TAL044, TAL046, TAL047, TAL049, as well as their derivatives, manufactured by Leroy-Somer or on Leroy-Somer's behalf, comply with the following International Standards and Directive:

- EN and IEC 60034-1, 60034-5 and 60034-22 - ISO 8528-3 “Reciprocating internal combustion engine driven alternating current generating sets. Part 3. Alternating current generators for generating sets”

- Low Voltage Directive Nr 2014/35/UE dated 26 February 2014 Furthermore, these generators, designed in compliance with the Machine Directive Nr 2006/42, are therefore able to be incorporated into Electrical Gen-Sets complying with the following International Directives:

- Machinery Directive Nr 2006/42/EC dated 17 May 2006 - EMC Directive Nr 2014/30/UE dated 26 February 2014, as intrinsic levels of emissions and immunity are concerned

WARNING: The here mentioned generators should not be commissioned until the corresponding Gen-Sets have been declared in compliance with the Directives Nr 2006/42/EC and 2014/30/UE, as well as with the other relevant Directives. Leroy-Somer undertakes to transmit, in response to a reasoned request by the national authorities, relevant information on the generator.

Technical Managers J.P. CHARPENTIER Y. MESSIN

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The contractual EC Declaration of Conformity and Incorporation can be obtained from your contact on request.

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[email protected] www.lrsm.co/support

Design

Life Extension

Optimisation

Start-up

Operation

•Consulting & specification•Maintenance

contracts

•Reconditioning•System upgrade

•Monitoring•System audit

•Commissioning•Training

•Genuine spare parts•Repair services

Our worldwide service network of over 80 facilities is at your service.This local presence is our guarantee for fast and efficient repair, support and maintenance services.Trust your alternator maintenance and support to electric power generation experts. Our field personnel are 100% qualified and fully trained to operate in all environments and on all machine types.We have a deep understanding of alternator operation, providing the best value service to optimise your cost of ownership.

Where we can help:

Contact us:Americas: +1 (507) 625 4011Europe & Rest of the world: +33 238 609 908Asia Pacific: +65 6250 8488 China: +86 591 88373036India: +91 806 726 4867Middle East: +971 4 811 8483 Scan the code or go to:

Service & Support

www.emersonindustrial.com

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